Lions at a zoo in Cambridgeshire have found a new use for old Christmas trees.
They've been given the real trees to play with and have been enjoying rolling around with them.
Linton Zoological Gardens are also using some of the trees in their bio-burner to provide heating for the buildings.
Zuri, an African lion, has become quite attached to his tree
Manager Dawny Greenwood said: "They just love the trees, it gives them hours of fun."
People have been dropping off their trees and some companies have donated unsold ones.
FromCBBC newsround
It's really a good use for those "old" Christmas trees, but it's a pity that they were cut off the forests where they belong and have a much worthy role. Nevertheless I love animals and I always feel happy when they have a nice treatment in Zoos as well as in reserves or in the wild. We all must protect animals if we want nature to survive to development.
Mª Dulce Branquinho